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author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-12-26 15:59:39 -0300 |
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committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2023-12-26 16:36:58 -0300 |
commit | a419e9c904d7f5b3fcbcb6765e2d0aad51beec98 (patch) | |
tree | 3859a7cd9e9133106036361e53bd29d984013374 | |
parent | 6b3ace3a1d05a22b52689eb5ffb568b767eea53f (diff) | |
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math: Add test to check if ceil raise inexact floating-point exception
It is not allowed anymore on ISO C23.
-rw-r--r-- | math/Makefile | 3 | ||||
-rw-r--r-- | math/test-ceil-except-2.c | 67 |
2 files changed, 70 insertions, 0 deletions
diff --git a/math/Makefile b/math/Makefile index a9daae09de..eb9af635a9 100644 --- a/math/Makefile +++ b/math/Makefile @@ -241,6 +241,7 @@ tests = test-matherr-3 test-fenv basic-test \ test-fenv-tls test-fenv-preserve test-fenv-return \ test-nearbyint-except test-fenv-clear \ test-nearbyint-except-2 test-signgam-uchar test-signgam-uchar-init \ + test-ceil-except-2 \ test-signgam-uint test-signgam-uint-init test-signgam-ullong \ test-signgam-ullong-init test-nan-overflow test-nan-payload \ test-fexcept test-fexcept-traps test-fesetexcept \ @@ -463,6 +464,8 @@ CFLAGS-test-fe-snans-always-signal.c += $(config-cflags-signaling-nans) CFLAGS-test-nan-const.c += -fno-builtin +CFLAGS-test-ceil-except-2.c += -fno-builtin + include ../Rules gen-all-calls = $(gen-libm-calls) $(gen-calls) diff --git a/math/test-ceil-except-2.c b/math/test-ceil-except-2.c new file mode 100644 index 0000000000..c25956a402 --- /dev/null +++ b/math/test-ceil-except-2.c @@ -0,0 +1,67 @@ +/* Test ceil functions do not disable exception traps. + Copyright (C) 2023 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + +#include <fenv.h> +#include <math.h> +#include <stdio.h> + +#ifndef FE_INEXACT +# define FE_INEXACT 0 +#endif + +#define TEST_FUNC(NAME, FLOAT, SUFFIX) \ +static int \ +NAME (void) \ +{ \ + int result = 0; \ + volatile FLOAT a, b __attribute__ ((unused)); \ + a = 1.5; \ + /* ceil must work when traps on "inexact" are enabled. */ \ + b = ceil ## SUFFIX (a); \ + /* And it must have left those traps enabled. */ \ + if (fegetexcept () == FE_INEXACT) \ + puts ("PASS: " #FLOAT); \ + else \ + { \ + puts ("FAIL: " #FLOAT); \ + result = 1; \ + } \ + return result; \ +} + +TEST_FUNC (float_test, float, f) +TEST_FUNC (double_test, double, ) +TEST_FUNC (ldouble_test, long double, l) + +static int +do_test (void) +{ + if (feenableexcept (FE_INEXACT) == -1) + { + puts ("enabling FE_INEXACT traps failed, cannot test"); + return 77; + } + int result = float_test (); + feenableexcept (FE_INEXACT); + result |= double_test (); + feenableexcept (FE_INEXACT); + result |= ldouble_test (); + return result; +} + +#include <support/test-driver.c> |